In better news, the rims I recently ordered for Bike #3 (counting from Niles) arrived today from France. They are New Old Stock Mavic SSC No. 4 Cr.Ds from the early 1990s. I could find no information about them online. Having now seen them in the flesh, I think I get how they differ from the legendary Paris-Roubaix SSC rims.
They look exactly like the P-R rims. Unlike the Argent and Bleu SSCs, which are, as their names suggest, respectively silver and blue, the P-Rs are hard anodized and black. The No. 4 Cr.D look like they're hard anodized... but they're not! They are in fact just silver rims that have been painted black—presumably to make them look like the P-Rs. Jobst Brandt would be so pleased!
They are thus pretty much perfect rims. The best, "mountain"-era Mavic decals; the painted-on SSC Mavic logo; double eyelets; incredibly light; incredibly strong; non-hard-anodized; and exactly resembling the coolest rims of all time, the P-R SSCs. Now I just need to visit Mike Barry and pick up some Challenge Paris-Roubaix 27mm tubulars. And build the bike, of course...
The inside of the rim is silver, not black, as are the sidewalls. Not hard-anodized! (I wonder what "Cr.D" stands for. Couche dûre is French for "hard anodized." That lower-case "r" seems to indicate the opposite!)
The incredible painted-on SSC Mavic logo.